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STRUCTURE AND PROPERTIES OF AMINO ACIDS

Structure and Properties of Amino Acids
When the amino acid alanine (R-group is CH3) is added to a solution with a pH of 7.3, alanine becomes

nonpolar
a zwitterions
a cation
an isotope

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Structure and Properties of Amino Acids
What is the end product of leucine metabolism?

Oxaloacetic acid
Acetyl carnitine
Pyruvic acid
Acetyl-CoA

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Structure and Properties of Amino Acids
What is the heaviest of the twenty amino acids?

Tyrosine
Histidine
Phenylalanine
Tryptophan

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Structure and Properties of Amino Acids
Which of the following amino acids can form hydrogen bonds with their side (R) groups?

All of these
Asparagine
Aspartic acid
Glutamine

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Structure and Properties of Amino Acids
The isoelectric point of an amino acid is defined as the pH

of maximum electrolytic mobility
where the molecule carries no electric charge
where the carboxyl group is uncharged
where the amino group is uncharged

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